Convert length, weight, temperature & more
Built & maintained by Pappu Venkata Subbi Reddy, founder of Clacify · Updated July 2026
The Unit Converter converts between units across many categories — length, weight, temperature, area, volume, speed, time, and more — instantly and accurately. Pick a category, choose the from and to units, type a value, and the result appears immediately. It covers both metric and imperial systems plus units common in India (like the use of lakhs in some contexts), making it useful for students, engineers, cooks, travellers, and anyone bridging measurement systems. The conversions use precise, standardised factors so results are reliable for schoolwork, professional calculations, and everyday conversions, and everything runs locally in your browser.
Within each category every unit is defined by its ratio to a single base unit (for example, metres for length or grams for weight). A conversion first multiplies your input by the source unit's factor to express it in the base unit, then divides by the destination unit's factor. Temperature is handled separately with explicit formulas because Celsius, Fahrenheit, and Kelvin do not share a common zero — for instance, °F = °C × 9/5 + 32, and K = °C + 273.15. Using a base-unit factor model keeps every conversion in a category mutually consistent and precise. All maths runs locally in JavaScript.
| From | To | Multiply by |
|---|---|---|
| 1 inch | centimetres | 2.54 |
| 1 foot | metres | 0.3048 |
| 1 metre | feet | 3.281 |
| 1 kilometre | miles | 0.6214 |
| 1 mile | kilometres | 1.609 |
| 1 kilogram | pounds | 2.205 |
| 1 pound | kilograms | 0.4536 |
| 1 litre | US gallons | 0.2642 |
| 1 acre | square metres | 4,047 |
Every conversion in a category routes through a base unit, so the numbers stay mutually consistent and exact — no rounding drift between, say, inches → metres → feet.
India and most of the world run on the metric system (metres, kilograms, litres), while the US and a few others use imperial (feet, pounds, gallons). So conversion comes up constantly — reading a US recipe, buying a TV measured in inches, following fitness numbers in pounds, or checking a spec sheet from an American supplier. This tool covers length, weight, volume, area, temperature and more so you don't have to keep a factor sheet handy.
Most conversions are a single multiplication, but temperature isn't — because the scales don't share a zero point. To go from Celsius to Fahrenheit you both scale and shift: °F = °C × 9/5 + 32. Kelvin just shifts: K = °C + 273.15. That's why "double the Celsius to get Fahrenheit" is wrong. The converter applies the correct formulas so 37 °C correctly gives 98.6 °F, not a rough guess.
1 metre = 3.28084 feet (approximately 3 feet 3.37 inches). To convert metres to feet, multiply by 3.28084. For example, a 6-metre room is 6 × 3.28084 = 19.69 feet.
Fahrenheit = (Celsius × 9/5) + 32. For example, 37°C (normal body temperature) = (37 × 9/5) + 32 = 98.6°F. To convert Fahrenheit back to Celsius: Celsius = (Fahrenheit − 32) × 5/9.